Elevator-boot.



N0. 66|,879. Patented Nov. I3, I900.

C. W. LEVALLEY.

ELEVATOR BOUT.

(Application filed Apr. 4, 1899.)

2 Sheets-Sheet l.

(N0 Model.)

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No. 66|,879-; Patented Nov. I3, I900. V

c.,w. LEVALLEY.

ELEVATOR BOOT.

(Application filed Apr. 4, 1899.]

(No Model.) 2 Sheets$heet 2.

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UNITED STATES PATENT GFFIQE.

CHRISTOPHER W. LEVALLEY, OF MILWAUKEE, WISCONSIN.

ELEVATOR-BOOT.

SPECIFICATION formingpart of Letters Patent No. 661,879. dated November13, 1900.

Application filed April 4, 1899. Serial No. 711,750. (No model.)

To all whom it may concern:

Be it known that I, CHRISTOPHER W. LE- VALLEY, a citizen of the UnitedStates, residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inElevator- Boots, of which the following is a specification, referencebeing had therein to the accompanying drawings.

The principal object of my invention is to construct the boot of anelevator insuch manner that it shall be practically dust-tight, while atthe same time its shaft-bearings can be readily oiled and the desiredadjustments of the said bearings be effected without in any manneropening the inclosing walls or casings, whereby any escape of dustorother particles of the material being elevated into the surroundingair is effectually prevented,

as will be fully set forth hereinafter.

Having thus explained the general character of the improvement, I willproceed to describe one mode in which I propose to carry it into effect.

Like reference-letters indicate similar parts in all the drawings.

Figure l is a side elevation of the lower part of an elevator embodyingmy invention. Fig. 2 is a vertical section, enlarged, taken on the linewas, Fig. 1. Fig. 3 is a horizontal section taken on line 2 .2, Fig. 1.Fig. 4. is a vertical section taken on the line y 1 Fig. 3, looking inthe direction of the arrow on said Fig. 3. Fig. 5 isa side elevation ofthe parts shown in Figs. 3 and 4...

A A A A A represent one of the side walls or casing-plates, of which thesections A A receive the lower ends of the elevatorlegs, to which theoverlapping flanges a a are or may be screwed in the usual manner. Thesection A projects some distance above the horizontal line of theadjacent sections A A and constitute the lower parts of the side wallsof a housing which preferably practically occupies the full width of thespace between the lower ends of the elevator-legs. The section Aprojects out beyond the elevator-leg of that side to receive theinchute, as is customary in boots of this sort. I usually cast areinforcing bead or rib a at the outer edge of the side wall.

B is the base of the side wall, with holes for the reception of bolts.

B represents a door arranged to close an opening in the lower part ofthe elevator-boot,

provided for the purpose of cleaning out the boot. It is secured inplace in any suitable manner.

O is a curved plate, preferably of sheet metal, which forms the bottomwall of the boot. It is held in place in any suitable way, as by meansof the bolts b, which pass through the side walls of the casing.

c c are projecting ends of the curved plate 0, which are adapted tooverlap the adjacent ends of the inchute and of one leg of the elevator.

Each casing-plate has a supplemental housing D D cast integral therewithto receive one of the shaft-boxes and is provided with an opening (1 inits upper face foran oil-tube, to be described. The extreme upperportion of this housing is expanded transversely, so as to forminclosing walls of a nut-receiver d", in which is seated loosely a nutE, which is held from rotation by contact with the receiver-walls.

F is a screw-shaft supported vertically in the said nut, with ahand-wheel F at its upper end. At the lower end of the screw there is ashaft-bearing G G, of which the part G is fitted to receive one end ofthe ordinary pulley-shaft H, the upward extension Gr being provided witha socketg to receive the lower end of the screw-shaft, which is securedtherein so that it can be rotated, but cannot be withdrawn therefrom, aconvenient way of doing that being shown as consisting of set-screws gg, mounted in the part G, with their ends entering a circumferentialgroovefin said shaft near its lower end, so

that by rotating the shaft in the nut E the bearing can be adjustedvertically, as may be found desirable, and from an examination of thedrawings it will be readily understood that the pulley H maybe drawn upmore or less into the continuationl of theboot, which continuation isusually made of wood and wide enough to practically fill the spacebetween the elevator-legs J J, and is secured at its lower edges to theflanges a? (#01 the easing-plates.

The end of shaft H fits closely the vertical wall at the inner end ofthe shaft-seat in the shaft-bearing, and the outer face of said bearingis or may be reduced in size, say, as indicated at 9 where it may becase-hardened, and, as is indicated in Fig. 2, those outer faces or endsof the shaft-bearings are in line with the shaft-axis and engage withthe inner adjacent walls of the supplemental housings. They (thesupplemental housings) serve as guides to support the shaft, the pulley,and the elevator-belt against any to-and-fro movement on the line of theshaft-axis. To prevent undue movement of the same parts on a line atright angles to the shaft-axis, I propose to employ vertical guides orways upon opposite sides of the shaft-bearings, and one convenientconstruction for such purpose is illustrated at K K, consisting ofplates or ribs cast integral with or attached to the casingplates orwalls of the'supplemental housing, as shall be found mostdesirable ineach particular form or size of boot.

L L are oil-tubes provided at their upper ends with closing-cups orgrease-cups to contain a lubricant'l Z and fitted to slide up and 7 downin the openings (1 d of the supplemental housings, the lower ends of theoil-tubes being preferably screw-threaded where they are seated insuitable openings g g of said shaft-bearings, so as to rise and falltherewith when the screw-shafts are turned in the proper direction.

As the elevator-legs and the inchute may be of any usualor approvedmaterial and construction, they need not be described in detail.

The interior of the boot in whole orin part may be lined with arelatively thin facing of chilled iron, as is indicated by M M, suchlining being more important at such places as will be subject toabrasion when the material to be handled is iron ore or something of asimilar character. secured to the outer supporting parts by means ofscrews or rivets m m or their equivalents, as indicated, and may beremoved and replaced at will. I

By an examination of the drawings in con- The lining M may be nectionwith the above description it will be understood that all the operativeparts are inclosed within a practically dust-proof casing and housingand may be adjusted and oiled without opening or moving any part of suchcasing or housing and that the parts through which oil can be introducedare outside of the casing or housing, but maintain a fixed relation toand travel up and down with the bearings which are to be lubricated. Itwill also be seen that all the parts of the casing-plate and thesupplemental housing and the guides or ways for the shaft-bearings andthe supports for the upper ends of the screwshaft and the oil-tube uponeither side of the boot are made in one integral piece of metal, or atleast their construction and function permit of their being so made.

I do not wish to be limited to the precise details of constructionherein illustrated, because many modifications will suggest themselvesto a person skilled in the art without departing from the spirit of myinvention or going outside of its scope.

What I claim is- ...1. An elevator-boot having its side walls providedwith housings D to receive the shaftbearings, the said housings beingprovided with ribs or flanges K adapted to engage with the sides of thebearings at their outer ends, substantially as set forth.

2. The combination with an elevator-boot provided with housings D, of aturning pulleyfor the elevator arranged within the boot, the shaft onwhich the pulley is mounted and the bearings for the shaft extendinginto the said housings, the ends of the bearings being closed andreduced in size, as at g in line with the shaft, the said reducedportions of the bearings constituting bearingsurfaces adapted to engagewith the outer walls of the said housings, substantially as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

CHRISTOPHER W. LEVALLEY.

Witnesses:

WM. 0. FRYE, V. I. KLOFANDA.

